|Yellow trout lily|
Radnor Lake, Tennessee
Erythronium flavum Sm.
Erythronium americanum (Trout lily, Yellow trout lily, Yellow dogtooth violet) is a species of perennial spring ephemeral flower native to North America and dwelling in woodland habitats. The common name "Trout lily" refers to the appearance of its gray-green leaves mottled with brown or gray, which allegedly resemble the coloring of brook trout.
Trout lily blooms in early spring with nodding one-inch yellow flowers, the petals (3) and petal-like sepals (3) recurved upward. Each plant sends up a single flower stem with a pair of leaves, but for the first 7 years of the plants life it will not flower. In North America E. americanum does not reproduce very effectively via sexual reproduction with only 10% of polinatated flowers developing seeds.
In North America trout lilies grow in colonies that can be up to 300 years old. The individuals will often reproduce asexually via a "dropper" or from small corms budding off of the main corm. A dropper is a tubular fleshy stem that grows out of a corm and then penetrates deep into the soil before another corm is formed at its tip and the stem connecting the daughter and parent corm dies.
- Kew World Checklist of Selected Plant Families
- Coulber, Sarah. "Trout Lily – Erythronium americanum". Canada Wildlife Federation. Retrieved 25 April 2011.
- Blanchan, Neltje (2005). Wild Flowers Worth Knowing. Project Gutenberg Literary Archive Foundation.
- Thieret, John W. (2001). National Audubon Society Field Guide to Wildflowers, Eastern Region (revised ed.). Alfred A. Knopf, New York.
- Biota of North America Program 2014 county distribution map
- The plant grows from a corm, or underground bulb. The bulbs of E. americanum are burried very deeply compared to other lily family plants.Ker Gawler, John Bellenden. (1808). Botanical Magazine 28: pl. 1113
- Bernhardt, Peter (2003). Wily violets & underground orchids : revelations of a botanist (University of Chicago Press ed.). Chicago: University of Chicago Press. ISBN 9780226043661.
|Wikimedia Commons has media related to Erythronium americanum.|
- USDA Plants Profile: Erythronium americanum
- Canada Wildlife Federation: Wild about Flowers "Erythronium americanum -- Trout lily"
- Lady Bird Johnson Wildflower Center, University of Texas, native plant database
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